KiCad is not meant for simulation. So you would not find these components in KiCad. If you are looking to simulate a circuit with dependent sources, please use Oscad. http://www.oscad.in/ Oscad uses KiCad for schematic creation and Ngspice for simulation. We have created most of the components for simulation. You can include them in your schematic by loading the Oscad libraries. You may want to listen to the Oscad tutorial on schematic creation and simulation , available here  http://www.spoken-tutorial.org/list_videos?view=1&foss=Oscad&language=English , for more details.

I already loaded OSCAD libraries and not able to locate voltage controlled switch component which can be simulated with ngspice.I am not able to design new switch model using model builder also.

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Please refer following link 

http://www.ecircuitcenter.com/SPICEsummary.htm

I am trying to simulate 'analog behavioral models' for implementation of piece wise linear model of diode.First i made sub circuit using sub circuit builder.

v1  2 1 dc 0.7

u1  3 1 port

a1 3 (3 2) u2

.model u2 aswitch(cntl_on=0.7 cntl_off=0.699 r_on=0.01 r_off=1e6)//

Now i tried to run 

.include diode.sub

V_u2 5 3 0

V_u3 1 2 0

* Plotting option vplot8_1

x2  0 2 diode

r1  1 3 300

v1  0 4 dc 0.3

x1  4 3 diode

idc1  5 0 3m

.dc  v1 100e-03 100e-03 100e-03

.plot i(V_u2)

.plot i(V_u3)

.plot v(3) 

.end

I got following errors.

Warning: Dynamic gmin stepping failed

Warning: source stepping failed

doAnalyses: iteration limit reached

run simulation(s) aborted

Error: no such vector i(v_u2)

Error: no such vector i(v_u3)

Error: no such vector v(3)

ngspice 1 -> 

I got solution of above mention error but still need help in modeling analog behaviors model.It would be appreciated if you could help me in this problem.

Thanks for response,it works.